- Patients were excluded from the study if they were still able to move their limb actively in spite of the sedation. Patients were also excluded if they had signs of recent ischemia or infarction for less then seven days. Patients with severe orthopaedic or vascular damage, i.e., fractures or oedema in the lower limbs were also excluded. Patients with an augmented risk for neuro electrical stimulation such as open wounds, hemodialysis or an arterial catheter at the stimulation area were also excluded.